Processing messages

ABSTRACT

An apparatus for processing messages input from a plurality of clients. The apparatus includes an acquisition unit configured to obtain a first message input from a first client, a second message input from a second client, and a user selection input from the second client. The user selection is of a first portion of the first message and indicates that the second message is a comment on the first portion of the first message. The apparatus also includes a control unit in communication with the acquisition unit. The control unit is configured to perform a first control action in response to the acquisition unit obtaining the first message, the second message, and the user selection. The first control action results in the first message, the second message, and a first link connecting the first portion of the first message and the second message being displayed on the plurality of clients.

CROSS-REFERENCE TO RELATED APPLICATION

This application is related to and claims the benefit of Japan PatentApplication No. 2014-143062, filed Jul. 11, 2014. This application is acontinuation of co-pending U.S. patent application Ser. No. 14/701,598,filed May 1, 2015. Both of said applications are incorporated byreference herein for all purposes.

BACKGROUND

The present invention relates to processing messages. In particular, thepresent invention relates to processing messages input from a pluralityof clients. Instant messengers have recently been used extensively asreal-time communication tools.

SUMMARY

According to embodiments of the present disclosure, aspects of thedisclosure may include an apparatus for processing messages input from aplurality of clients. The apparatus includes an acquisition unit. Theacquisition unit is configured to obtain a first message input from afirst client, a second message input from a second client, and a userselection input from the second client. The user selection is of a firstportion of the first message and indicates that the second message is acomment on the first portion of the first message. The apparatus alsoincludes a control unit in communication with the acquisition unit. Thecontrol unit is configured to perform a first control action in responseto the acquisition unit obtaining the first message, the second message,and the user selection. The first control action results in the firstmessage, the second message, and a first link connecting the firstportion of the first message and the second message being displayed onthe plurality of clients.

According to embodiments of the present disclosure, aspects of thedisclosure may also include a method for processing messages input froma plurality of clients. As part of the method, a first message inputfrom a first client, a second message input from a second client, and auser selection input from the second client are obtained. The userselection is of a first portion of the first message and indicates thatthe second message is a comment on the first portion of the firstmessage. A first control action is performed in response to the firstmessage, the second message, and the user selection having beenobtained. The first control action results in the first message, thesecond message, and a first link connecting the first portion of thefirst message and the second message being displayed on the plurality ofclients.

According to embodiments of the present disclosure, aspects of thedisclosure may also include a non-transitory computer readable medium.The computer readable medium embodies a computer program for causing acomputer to perform a method for processing messages input from aplurality of clients. As part of the method, a first message input froma first client, a second message input from a second client, and a userselection input from the second client are obtained. The user selectionis of a first portion of the first message and indicates that the secondmessage is a comment on the first portion of the first message. A firstcontrol action is performed in response to the first message, the secondmessage, and the user selection having been obtained. The first controlaction results in the first message, the second message, and a firstlink connecting the first portion of the first message and the secondmessage being displayed on the plurality of clients.

The above summary is not intended to limit the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a diagram showing an example of the overall configuration of acomputer system, in accordance with some embodiments of the presentinvention.

FIG. 2 is a diagram showing an example of a display using generalinstant messaging, in accordance with some embodiments of the presentinvention.

FIG. 3 is a diagram showing an example of an operation of designating atarget of a reply and inputting a message directed thereto, inaccordance with some embodiments of the present invention.

FIG. 4 is a diagram showing a display example in which each userperforms the operation of designating a target of the reply andinputting a message directed thereto, in accordance with someembodiments of the present invention.

FIG. 5 is a diagram showing an example of a thread-by-thread display, inaccordance with some embodiments of the present invention.

FIG. 6 is a diagram showing a display example before a link is replaced,in accordance with some embodiments of the present invention.

FIG. 7 is a diagram showing a second display example after a link isreplaced in the display example of FIG. 6, in accordance with someembodiments of the present invention.

FIG. 8 is a diagram illustrating an example of the functionalconfiguration of a client and an instant messenger server (IM server),in accordance with some embodiments of the present invention.

FIGS. 9A, 9B, and 9C are diagrams showing examples of message propertiesand link properties stored in a message-information storage section, inaccordance with some embodiments of the present invention.

FIG. 10 is a sequence diagram showing an operation example of the clientand the IM server in the operation of designating a target of the replyand inputting a message directed thereto, in accordance with someembodiments of the present invention.

FIG. 11 is a diagram illustrating a first example suggest function, inaccordance with some embodiments of the present invention.

FIG. 12 is a diagram illustrating a second example suggest function, inaccordance with some embodiments of the present invention.

FIG. 13 is a sequence diagram showing an operation example in which theoperation of the client and the IM server for designating a target ofthe reply and inputting a message directed thereto is expanded, inaccordance with some embodiments of the present invention.

FIG. 14 is a sequence diagram showing an operation example of the clientand the IM server for presenting a thread-by-thread display, inaccordance with some embodiments of the present invention.

FIG. 15 is a sequence diagram showing an operation example of the clientand the IM server when in replacing a link, in accordance with someembodiments of the present invention.

FIG. 16 is a diagram of an example of the hardware configuration of aclient, in accordance with some embodiments of the present invention.

DETAILED DESCRIPTION

Some embodiments of the present invention will be described in detailherein with reference to the attached drawings.

Connection or context of messages in instant messaging is sometimesdifficult to understand. For example, it is sometimes difficult to knowwhose and what message one message is a reply to. It is also sometimesdifficult to know whether one message is a reply to the whole of anothermessage or part of another message. Another cause of the difficulty inunderstanding the context of messages is that though a user can see amessage when the user replies to the message, the message becomesinvisible when the user scrolls through the screen of an instantmessenger.

Thus, in order to make it easy to understand the context of messages,assigning remarks made on a network to threads may be performed. In somesituations, a display may be used in which a thread (group of remarks)consisting of remarks of member users may be created on the basis of athread creating instruction from the user and member users'instructions. Other users in the thread may be notified about theinformation, so that the thread information is shared in the network.Instead of designating users, remarks to be included in the thread maybe designated. Further, in some situations, a chat controller mayprovide information exchange in the form of a plurality chat lines amonga plurality of chat clients registered with a chat room, and a threadmanagement controller may determine one or more relationships among thechat lines and specifies one or more threads corresponding to therelationships, and may assign each of the chat lines to one of thethreads.

Assigning remarks made on a network to threads may not clearly show towhat message another message is input as a comment. Some embodiments ofthe present invention may allow for a clear showing of to which messageanother message is input as a comment, thereby making it easy tounderstand the context of messages.

Some embodiments may include an apparatus for processing messages inputfrom a plurality of clients, which apparatus may include an acquisitionunit configured to obtain a first message input from a first client anda second message input from a second client as a comment on at leastpart of the first message. Also included, may be a control unitconfigured to perform such control that the first message, the secondmessage, and a link connecting the at least part of the first messageand the second message are displayed.

In some embodiments, the acquisition unit may obtain a message input asa comment on one part of the first message as the second message and mayfurther obtain a third message input as a comment on another part of thefirst message. When an operation of selecting either the one part of thefirst message or the second message is performed, the control unit mayperform such control that the first message and the second message aredisplayed and the third message is not displayed. The acquisition unitmay further obtain a fourth message input as a comment on the whole ofthe first message. When an operation of selecting either the one part ofthe first message or the second message is performed, the control unitmay perform such control that the fourth message is further displayed.

In some embodiments, the acquisition unit may obtain a message input asa comment on one part of the first message as the second message and mayfurther obtain a third message input as a comment on another part of thefirst message and a fourth message input as a comment on the whole ofthe first message. When an operation of selecting any of the firstmessage, the second message, and the third message is performed, thecontrol unit may perform such control that the fourth message isdisplayed.

In some embodiments, the apparatus may further include a notificationunit configured, when one part of the first message is selected and acomment on another part of the first message has already been input, tonotify the another part. The acquisition unit may obtain a message inputas a comment on the one part and the another part of the first messageas the second message.

In some embodiments, when an operation of moving one end of the linkfrom at least part of the first message to at least part of a fifthmessage is performed, the control unit may perform such control that alink connecting at least part of the fifth message and the secondmessage is displayed.

In some embodiments, when an operation of moving one end of the linkfrom the second message to a sixth message is performed, the controlunit may perform such control that a link connecting at least part ofthe first message and the sixth message is displayed.

Furthermore, in some embodiments, the acquisition unit may obtain aseventh message input irrespective of the first message and the secondmessage. The control unit may perform such control that the seventhmessage is displayed, and that when an operation of associating onemessage of the first message and the second message with the seventhmessage is performed, a link connecting the one message and the seventhmessage is further displayed.

Some embodiments may include an apparatus for processing messages inputfrom a plurality of clients, which apparatus may include an acquisitionunit configured to obtain a first message input from a first client, asecond message input from a second client as a comment on one part ofthe first message, and a third message input from a third client as acomment on another part of the first message. The apparatus may alsoinclude a generating unit configured to generate link informationindicating that the one part of the first message and the second messageare linked and that the another part of the first message and the thirdmessage are linked. The apparatus may further include a control unitconfigured to perform such control that the first message, the secondmessage, and the third message are displayed, and when an operation ofselecting either the one part of the first message or the second messageis performed, the third message whose linkage with the another part ofthe first message is indicated by the link information is not displayed.

Some embodiments may include a method for processing messages input froma plurality of clients, which method may include the steps of obtaininga first message input from a first client; displaying the first message;obtaining a second message input from a second client as a comment on atleast part of the first message; displaying the second message; anddisplaying a link connecting the at least part of the first message andthe second message.

Some embodiments may include a program, which program may cause acomputer to function as an apparatus for processing messages input froma plurality of clients. The program may cause the computer to functionas an acquisition unit configured to obtain a first message input from afirst client and a second message input from a second client as acomment on at least part of the first message. The may further cause thecomputer to function as a control unit configured to perform suchcontrol that the first message, the second message, and a linkconnecting the at least part of the first message and the second messageare displayed.

According to some embodiments, the context of messages can easily beunderstood by clearly showing on what message another message is inputas a comment.

FIG. 1 is a diagram showing an example of the overall configuration of acomputer system, in accordance with some embodiments of the presentinvention. As shown in the diagram, this computer system is configuredsuch that clients 10K, 10L, 10L and an instant messaging server(hereinafter referred to as “IM server”) 20 are connected through anetwork 80. Although FIG. 1 shows the clients 10K to 10M, they may bereferred to herein as clients 10. Although FIG. 1 shows only threeclients 10, four or more clients 10 may be provided.

The clients 10 may be computers for use in communications among usersusing an instant messenger. Specifically, each client 10 may display amessage input by one user and may transmit the message to the otherclients 10 via the IM server 20. The client 10 may receive a messagethat is input by another user to another client 10 via the IM server 20and may display it. Examples of the clients 10 include a desktoppersonal computer (PC), a notebook PC, a tablet PC, a wearable computer,a personal digital assistant (PDA), a smartphone, and a portable phone.

The IM server 20 is may be a computer causing the instant messenger,which is a communication tool among clients 10, to run. Specifically,the IM server 20 may manage the clients 10 that join instant messaging,and when receiving a message from one client 10, may transmit themessage to all the other joining clients 10. The IM server 20 may storethe message as data. The data may hereinafter be referred to as “messagedata”. An example of the IM server 20 is a PC.

The network 80, which may be the Internet, is a communication means foruse in telecommunications between the clients 10 and the IM server 20.

FIG. 2 is a diagram showing an example of a display in the client 10 ina computer system with such a configuration using general instantmessaging, in accordance with some embodiments of the present invention.This display shows that a user A first inputs a message M1, then a userB inputs a message M2, a user C inputs a message M3, and the user Aagain inputs a message M4. Thereafter, a user D inputs a message M5, theuser B inputs a message M6, and the user C inputs a message M7.

However, in this display, the messages are displayed in order of input.Accordingly, it may be difficult to know which message links to whichother message, that is, which message is a reply to which other message.It may also be difficult to know to which part of another message onemessage replies.

For example, the display example in FIG. 2 has the following context:the message M1 includes keywords “IM1”, “IM2”, and “IM3” indicatingthree instant messengers. Among them, for “IM1”, the user B returns themessage M2, and the user A returns the message M4 in response to that;for “IM2”, the user C returns the message M3, and the user B returns themessage M6 in response to that; and for “IM3”, the user C returns themessage M7. On the other hand, the user D returns the message M5 to thewhole of the message M1. However, such context may not be obtainablefrom the displayed information.

Thus, some embodiments are configured to designate a target of a replyand to link the reply message to the target.

FIG. 3 is a diagram showing an example of an operation of designating atarget of a reply and inputting a message directed thereto, inaccordance with some embodiments of the present invention. This diagramshows an extracted scene in which the user B inputs the message M2 inresponse to the message M1 in FIG. 2.

First, the user B selects the keyword “IM1” in the message M1, as shownby a balloon 31. Subsequently, the user B clicks on a reply button, asshown by a balloon 32. Then, a reply window 33 for inputting a replymessage is displayed, and the user B inputs the message M2 in the replywindow 33, as shown by a balloon 34. Thereafter, when the user B clickson an OK button, as shown by a balloon 35, the return of the message M2to the message M1 is completed. Thus, the message M2 is associated withthe keyword “IM1” in the message M1, and a link L1 indicating theassociation is displayed. Such association is achieved by, for example,adding a tag “IM1” to the message M1, the message M2, and the link L1,as described herein.

Another example in which some message is input in response to a previousmessage is an expression of agreement with the previous message, inaddition to a reply. These responses can be generalized to “comments”,but the depicted embodiment is described using a reply as an example.

FIG. 4 is a diagram showing a display example in which the operationshown in FIG. 3 is performed when the users return the messages shown inFIG. 2, in accordance with some embodiments of the present invention.Such a display may be a goal of some embodiments in which keywordsdesignated as the targets of replies and all messages linked to thekeywords are displayed. Specifically, since all of the messages M2 to M7are linked to the keywords in the message M1 or the entire message M1,all of the messages M1 to M7 may be displayed. Furthermore, since thekeywords in the message M1 or the whole of the message M1 and themessages M2 to M7 have the associations described in FIG. 2, links L1 toL6 indicating such associations are also displayed. A reply to the wholeof a message may be regarded as a reply to all keywords designated asthe targets of the reply in the message. Here, the message M1 is used asan example of a first message, the message M3 is used an example of asecond message that is input as a comment to at least part of the firstmessage, and the link L2 is used as an example of a link that links atleast part of the first message and the second message.

In some embodiments, a thread, which is a collection of messages relatedto the same subject, may be created by following the linked messages.This is achieved by, for example, following a tag added to relatedmessages and a link there between.

FIG. 5 is a diagram showing an example of a thread-by-thread display, inaccordance with some embodiments of the present invention. This shows adisplay generated when the user selects the message M6 in the displayshown in FIG. 4. Such display may be achieved by following the keywordlinked from the message M6. Also, when the message M3 or the keyword“IM2” in the messages M1 and M3 are selected, the same display may bepresented. On the other hand, for example, the message M2 may not bedisplayed because it does not appear in a path through which the userreaches the message M1 by following the links. Here, the message M2 isused as an example of a third message that is not displayed when anoperation of selecting either part of the first message or the secondmessage is performed. There is also a message, like the message M5,which is not linked to the keyword linked from the message M6 but islinked to the whole of the message including the keyword. In someembodiments, such a message may be displayed in the same thread. Here,the message M5 is used as an example of a fourth message that is inputas a comment on the whole of the first message and is displayed when anoperation of selecting either part of the first message or the secondmessage is performed.

In some embodiments replacement of a link from one message to anothermessage may also be allowed. FIGS. 6 and 7 are diagrams showing adisplay example of the replacement of a link, in accordance with someembodiments of the present invention.

First, as shown in FIG. 6, assume that a user inputs a message M8, withthe keyword “IM3” in the message M7 as the target of the reply. Then, alink L7 indicating a link between “IM3” in the message M7 and themessage M8 is displayed.

However, assume that after such a display is presented, the userrealizes that “IM3” in the message M7 being set as the target of thereply was a mistake because the message M8 is a message about “IM1”. Inthis case, the user can perform an operation of replacing the link tothe keyword “IM3” in message 7 with a link to the keyword “IM1” in themessage M4, which is a correct target, as shown in FIG. 7. Thisoperation allows the link L7 to be hidden as indicated by the brokenline and a link L8 to be displayed. Here, the message M7 is used as anexample of a first message, which is a source message at one end of alink; the message M8 is used as an example of a second message at whicha link connecting to at least part of a fifth message is displayed whenan operation of moving one end of the link from at least part of thefirst message to at least part of the fifth message is performed; andthe message M4 is used as an example of the fifth message at which thelink connecting to the second message is displayed when the end of thelink is moved.

In FIGS. 6 and 7, the one end of the link connected to the message isfixed, and the other end of the link connected to the keyword isconnected to a different keyword; however, some embodiments of presentinvention are not limited thereto. Alternatively, in some embodiments,the end of the link connected to the keyword may be fixed, and the endof the link connected to the message may be connected to a differentmessage. In this case, for example, the latter end of the link L7 isconnected to a message other than the message M8. Here, the message, asa substitute of the message M8, is used as an example of a sixth messageat which a link connecting to at least part of a first message isdisplayed when one end of the link has moved thereto.

FIG. 8 is a diagram illustrating an example of the functionalconfiguration of the client 10 and the IM server 20 for implementing theabove outline, in accordance with some embodiments of the presentinvention. As shown in FIG. 8, the client 10 may include a receivingsection 11, a display-information generating section 12, a displaycontrol section 13, an operation receiving section 14, and atransmitting section 15. The IM server 20 includes a message-informationstorage section 21, a receiving section 22, a message-informationmanaging section 23, and a transmitting section 24.

Some embodiments of the processing sections constituting the client 10are described herein.

The receiving section 11 mat receive a message information set from theIM server 20. The message information may include message data and theproperties of the message data. The receiving section 11 may receiveinformation, from the IM server 20, indicating that a message related toanother message, which has already been displayed, is stored in the IMserver 20 (the former message is hereinafter referred to as “relatedmessage”, and the latter message is hereinafter referred to as“displayed message”).

The display-information generating section 12 may generate displayinformation for displaying a GUI on the basis of the message informationset that the receiving section 11 receives. When the receiving section11 receives information indicating that a related message is stored inthe IM server 20, the display-information generating section 12 maygenerate display information for displaying an icon representing therelated message. Furthermore, when the operation receiving section 14receives a user operation, the display-information generating section 12may generate display information for displaying a GUI corresponding tothe user operation. For example, if the user operation is for selectinga keyword in a message, the display-information generating section 12may generate display information for displaying a reply window forinputting a message about the keyword. For another example, if the useroperation is for selecting a message, the display-information generatingsection 12 may generate display information for displaying only a seriesof messages connected to the message. For yet another example, if theuser operation is for selecting a link between messages, thedisplay-information generating section 12 may generate displayinformation for displaying an icon that can be dragged to the startingend and the terminal end of the messages. For yet another example, ifthe user operation is for dragging and dropping the icon, thedisplay-information generating section 12 may generate displayinformation for displaying a dialog box for querying whether to move thelink or add a link.

The display control section 13 may control a display system 10d (see,e.g., FIG. 16) so as to present a display based on display informationgenerated by the display-information generating section 12.

The operation receiving section 14 may receive a user operation on theGUI displayed under the control of the display control section 13.

When the operation receiving section 14 receives a user operation, thetransmitting section 15 may transmit information about the useroperation to the IM server 20. For example, if the user operation is forinputting a message in a reply window, the transmitting section 15 maytransmit the message to the IM server 20. For another example, if theuser operation is for selecting an icon representing a related message,the transmitting section 15 may transmit information specifying therelated message to the IM server 20. For yet another example, if theuser operation is for associating a displayed message with a relatedmessage, the transmitting section 15 may transmit information indicatingthat the messages are to be associated to the IM server 20. Furthermore,if the user operation is for designating whether to move the link or adda link, the transmitting section 15 may transmit information indicatingthe starting end and the terminal end of an existing link (hereinafterreferred to as “existing-starting-end-and-terminal-end information”),information indicating the starting end and the terminal end of a newlink (hereinafter referred to as “new-starting-end-and-terminal-endinformation”), and classification on whether to move the link or add alink (hereinafter referred to as, “movement/addition classification”) tothe IM server 20.

Some embodiments of the processing sections and the storage section thatconstitute the IM server 20 are described herein.

The message-information storage section 21 may store messageinformation. The message information may include message data and theproperties of the message data, as described herein. The properties ofthe message data may include message properties and link properties. Themessage properties may include a plurality of items of metadata, such astag information. The link properties may express the context of messagesand may also include a plurality of items of metadata, such as taginformation. The tag information may be the URLs of tags stored in theIM server 20.

The receiving section 22 may receive information on user operations fromthe client 10. For example, if the user operation is for inputting amessage in a reply window, the receiving section 22 may receive themessage from the client 10. For another example, if the user operationis for selecting an icon that represents a related message, thereceiving section 22 may receive information specifying the relatedmessage from the client 10, and if the user operation is for associatinga displayed message with the related message, the receiving section 22may receive information indicating that the messages are to beassociated from the client 10. Furthermore, if the user operation is fordesignating whether to move the link or add a link, the receivingsection 22 may receive the existing-starting-end-and-terminal-endinformation, the new-starting-end-and-terminal-end information, and themovement/addition classification from the client 10. In someembodiments, the receiving section 22 may be an example of anacquisition unit for obtaining messages.

The message-information managing section 23 may update messageinformation stored in the message-information storage section 21 on thebasis of information on a user operation that the receiving section 22receives. For example, if information on the user operation is a messageinput to a reply window, the message-information managing section 23 mayadd message data on the message and may set a link between a keywordthat is the target of the reply of the message and the added messagedata. For another example, if information on the user operation isinformation indicating that a displayed message and a related messageare to be associated with each other, the message-information managingsection 23 may set a link between the message data on the messages. Foranother example, if information on the user operation is theexisting-starting-end-and-terminal-end information, thenew-starting-end-and-terminal-end information, and the movement/additionclassification, the message-information managing section 23 may move thetarget link or may add a link. Furthermore, the message-informationmanaging section 23 may read message information stored in themessage-information storage section 21. Furthermore, themessage-information managing section 23 may determine whether a relatedmessage is stored in the message-information storage section 21. In someembodiments, the message-information managing section 23 may be anexample of a generating unit for generating link information.

The transmitting section 24 may transmit a message information set thatthe message-information managing section 23 read to the client 10. Forexample, if the message-information managing section 23 determines thata related message is stored in the message-information storage section21, the transmitting section 24 may transmit information, to the client10, indicating that the related message is stored in the IM server 20.In some embodiments, the transmitting section 24 may be an example of acontrol unit for performing control so that a message or the like isdisplayed or hidden.

Some details of message properties and link properties that may bestored in some embodiments of a message-information storage section 21are described herein. FIGS. 9A to 9C are diagrams illustrating examplesof message properties and link properties, in accordance with someembodiments of the present invention. The diagrams show the propertiesfor the message M1 and the message M2 in FIG. 4.

FIG. 9A shows part of the message properties of the message M1, whichrelates to links. As shown in FIG. 9A, the message properties have, aslink values, links L1, L2, L4, and L6 connecting to the message M1, andhave keywords “IM1”, “IM2”, and “IM3” as tag information.

FIG. 9B is part of the link properties of the link L1 connecting to themessage M1. As shown in FIG. 9B, the link properties have, as a linkdestination message value, the message M2, which is the destination ofthe link L1, and have, as link source keyword and tag informationvalues, the keyword “IM1” designated as the target of a reply to themessage M2. In some embodiments, the link properties are examples oflink information.

FIG. 9C shows part of the message properties of the message M2, whichrelates to links. As shown in FIG. 9C, the message properties have, as alink value, the link L3 connecting to the message M2, and have, as a taginformation value, the keyword “IM1” designated as the target of a replyto the message M2.

FIG. 10 is a sequence diagram showing an operation example of the client10 and the IM server 20 in implementing the outline shown in FIGS. 3 and4, in accordance with some embodiments of the present invention. Thisoperation is started, for example, when the user sends a request tostart instant messaging from the client 10 to the IM server 20.

As shown in FIG. 10, at the IM server 20, first, the message-informationmanaging section 23 may read a message information set from themessage-information storage section 21, and the transmitting section 24may transmit the message information set to the client 10 (step 201).Here, the message-information managing section 23 may read a messageinformation set related to a session explicitly designated by the userfrom the message-information storage section 21. Alternatively, themessage-information managing section 23 may decide a session related tothe user, such as a session to which the user is invited, a session towhich the user applies for joining, or a session including a hot tag,and read a message information set related to the decided session.

Thus, at the client 10, the receiving section 11 may receive the messageinformation set from the IM server 20 (step 101). Thedisplay-information generating section 12 may generate displayinformation for displaying a GUI based on the message information set,and the display control section 13 may controls the display system 10D(see, e.g., FIG. 16) so that a display based on the display informationis presented (step 102). Specifically, the display-informationgenerating section 12 may generate a message portion in the GUI on thebasis of message data included in the message information. Furthermore,the display-information generating section 12 may generate a linkportion in the GUI on the basis of message properties and linkproperties included in the message information. The display controlsection 13 may control the display system 10D so that a GUI including amessage set and a link between the messages is displayed.

When the user performs an operation of selecting a keyword in a replytarget message, the operation receiving section 14 may receive theoperation (step 103). The user may select a plurality of reply targetkeywords. Alternatively, a keyword suggested using a reply suggestfunction may be selected. An example of the reply suggest function is afunction of displaying a keyword corresponding to existing taginformation as a candidate for selection.

Specifically, as shown in FIG. 11, assume that the user selects thekeyword “IM1” in the message M1 as indicated by a balloon 41, with themessage M1 displayed, and clicks on a reply button as indicated by aballoon 42. Then, a notification window 43 for notifying that a messageinput as a reply to the keyword “IM3” is present is displayed. Although,in this example, the notification window 43 is a balloon-shaped windoworiginating from the keyword “IM3”, any GUI may be used, such as arectangular window linked to the keyword “IM3”. Furthermore, a thread ofthe existing message may be displayed in the notification window 43. Inthis state, the user may notify the system that he intends to reply tothe existing reply target at the same time by clicking on an OK button,as indicated by a balloon 44. Alternatively, the user may notify thesystem of that he intends to reply to a plurality of existing replytargets at the same time by taking the same action on the plurality ofexisting reply targets.

Then, as shown in FIG. 12, the selected existing message M7 and the linkL6 connecting thereto may be displayed. At that time, a thread of themessage M7 may be displayed. Furthermore, since a reply window 45 forinputting a reply message is displayed, the user may input a message M9for the keywords “IM1” and “IM3” in the reply window 45, as indicated bya balloon 46. Thereafter, when the user clicks on an OK button, asindicated by a balloon 47, the reply to the message M1 by the message M9is completed. Thus, the keywords “IM1” and “IM3” in the message M1 maybe associated with the message M9, and the link L9 indicating theassociation may be displayed. Such association is achieved by, forexample, adding a tag “IM1” to the message M1 and adding tags“IM1”,“IM3” to the message M9 and the link L9. The link L9 may includenot only a link to a location selected first but also a locationselected using the suggest function. All related reply messages may befinally displayed.

Referring again to FIG. 10, the description of the operation example ofthe client 10 and the IM server 20 will be continued. Upon receiving anoperation of selecting a keyword in a message at step 103, the operationreceiving section 14 may hold the selected keyword. Thereafter, thedisplay-information generating section 12 may generate displayinformation for displaying a reply window, and the display controlsection 13 may control the display system 10D (see, e.g., FIG. 16) sothat a display based on the display information is presented (step 104).

When the user performs an operation of inputting a reply message inresponse to that presentation, the operation receiving section 14 mayreceive the operation (step 105). Then, the transmitting section 15 maytransmit the message that the operation receiving section 14 receivedand the keyword held by the operation receiving section 14 to the IMserver 20 (step 106).

Thus, at the IM server 20, the receiving section 22 may receive themessage and the keyword from the client 10 (step 202). Themessage-information managing section 23 may create message data aboutthe received message and may store the message data in themessage-information storage section 21 (step 203). Themessage-information managing section 23 may set message properties tothe message data created at step 203 and may store the messageproperties in the message-information storage section 21 (step 204).Specifically, the message-information managing section 23 may createmessage properties of the message data created at step 203, may set thekeyword selected at step 103 as tag information, and may store the taginformation in the message-information storage section 21. Furthermore,the message-information managing section 23 may set a link between themessage data on the reply target message set at step 103 and the messagedata created at step 203 and may store information on the link in themessage-information storage section 21 (step 205). Specifically, themessage-information managing section 23 may set the link between the twomessages to the message properties of the reply target message selectedat step 103 and may set the keyword selected at step 103 as taginformation. Furthermore, the message-information managing section 23may create link properties of the set link, may set informationspecifying the message data created at step 203 as link destinationmessage, may set the keyword selected at step 103 as a link sourcekeyword and tag information, and may store the link source keyword andtag information in the message-information storage section 21.

Thereafter, the transmitting section 24 may notify all other clients 10related to this session that the message information is updated (step206).

This operation ends, for example, when the user sends a request toterminate the instant messaging from the client 10 to the IM server 20.

In this operation example, in some embodiments, there are at least twoconceivable methods for reflecting, to a GUI displayed in the client 10,the reply message input at step 105 and a link between the reply targetmessage and the reply message.

A first method may include receiving updated message information fromthe IM server 20 after step 206, and reflecting the reply message andthe link to the GUI displayed on the client 10 on the basis of theupdated message information.

A second method may include updating the message information receivedand held at step 101 with the display-information generating section 12in parallel with updating the message information with the IM server 20,and reflecting the reply message and the link to the GUI displayed inthe client 10 on the basis of the message information updated by thedisplay-information generating section 12.

FIG. 13 is a sequence diagram showing an operation example in which theoperation of the client 10 and the IM server 20, shown in FIG. 10, isexpanded, in accordance with some embodiments of the present invention.After the message information is updated at steps 203 to 205 in FIG. 10,the following operation may be performed.

Specifically, as shown in FIG. 13, at the IM server 20, themessage-information managing section 23 may determine whether a messagedata set related to the message data on the reply message, which isdisplayed on the client 10 as a result of the operation in FIG. 10, isstored in the message-information storage section 21, and if it isdetermined that the related message data set is present, thetransmitting section 24 may return the determination to the client 10(step 221). For example, if the character string of the tag informationincluded in the message properties of the message data stored at step204 matches the character string of tag information included in themessage properties of message data that other users exchange, thesemessage data may be regarded as related message data.

Thus, at the client 10, the receiving section 11 may receive informationindicating that a related message data set is present from the IM server20 (step 121). The display-information generating section 12 maygenerate display information for displaying a GUI indicating theinformation, such as an icon, and the display control section 13 maycontrol the display system 10D (see, e.g., FIG. 16) so that a displaybased on the display information may be presented (step 122). The iconor the like may be displayed by user, area, time, and so on. Althoughthe icons or the like is taken as an example, any other display objectsthat are visual signs represented by icons or the like may be displayed.

When the user performs an operation of selecting an icon in response tothat display, the operation receiving section 14 may receive theoperation (step 123). Then, the transmitting section 15 may transmitinformation indicating that the operation of selecting an icon has beenperformed to the IM server 20 (step 124).

Thus, at the IM server 20, the receiving section 22 may receive theinformation indicating that the operation of selecting an icon has beenperformed (step 222). Then, the message-information managing section 23may read a message information set related to the related messageindicated by the icon selected at step 123 from the message-informationstorage section 21, and the transmitting section 24 may transmit themessage information set to the client 10 (step 223).

Thus, at the client 10, the receiving section 11 may receive the messageinformation set related to the related message from the IM server 20(step 125). Then, the display-information generating section 12 maygenerate display information for displaying a GUI on the basis of themessage information set related to the related message, and the displaycontrol section 13 may control the display system 10D (see, e.g., FIG.16) so that a display based on the display information may be presented(step 126). Specifically, the display-information generating section 12may generate a message portion of the GUI on the basis of message dataincluded in the message information. The display-information generatingsection 12 further may generate a link portion of the GUI on the basisof message properties and link properties included in the messageinformation. The display control section 13 may control the displaysystem 10D so that a GUI including the message set and a link betweenthe messages is displayed. The related message may be an example of aseventh message input irrespective of the first message and the secondmessage.

When the user performs an operation of associating the related messagedisplayed at step 126 and a reply message that has already beendisplayed (displayed message) in response to that display, the operationreceiving section 14 may receive the operation (step 127). Then, thetransmitting section 15 may transmit information indicating that theoperation of associating the messages has been performed to the IMserver 20 (step 128).

Thus, at the IM server 20, the receiving section 22 may receive theinformation indicating that the operation of associating the messageshas been performed (step 224). Then, the message-information managingsection 23 may set a link between message data of the related messageand message data of the displayed message (step 225). Specifically, themessage-information managing section 23 may set to the messageproperties of the displayed message a link between the two messages andthe tag information set to the message properties of the relatedmessage. Furthermore, the message-information managing section 23 maysets to the message properties of the related message a link between thetwo messages and the tag information set to the message properties ofthe displayed message. Furthermore, the mes sage-information managingsection 23 may create the link properties of the set link, may set therelated message as a link destination message, may set the taginformation of the displayed message, which is also the tag informationof the related message, as a link source keyword and tag information,and may store them in the message-information storage section 21.

Thereafter, the transmitting section 24 may notify all the other clients10 related to this session and all clients 10 exchanging relatedmessages that the message information has been updated (step 226). Thus,the message set may be displayed also on the clients 10 exchanging therelated messages. The message set may be represented, for example, by anicon or the like in an abbreviated form, or may be displayed in detailaccording to an instruction of the user to explicitly display it.

In this operation example, in some embodiments, there may be at leasttwo methods for reflecting the link between the related message and thedisplayed message to a GUI displayed on the client 10.

A first method may include receiving updated message information fromthe IM server 20 after step 226, and reflecting the reply message andthe link to the GUI displayed on the client 10 on the basis of theupdated message information.

A second method may include updating the message information receivedand held at step 125 with the display-information generating section 12in parallel with updating the message information with the IM server 20,and reflecting the reply message and the link to the GUI displayed inthe client 10 on the basis of the message information updated by thedisplay-information generating section 12.

FIG. 14 is a sequence diagram showing an operation example of the client10 and the IM server 20 when implementing the outline shown in FIG. 5,in accordance with some embodiments of the present invention. Thisoperation is started, for example, when the user sends a request tostart instant messaging from the client 10 to the IM server 20.

As shown in FIG. 14, at the IM server 20, the message-informationmanaging section 23 may read a message information set from themessage-information storage section 21, and the transmitting section 24may transmit the message information set to the client 10 (step 241).

Thus, at the client 10, the receiving section 11 may receive the messageinformation set from the IM server 20 (step 141). Thedisplay-information generating section 12 may generate displayinformation for displaying a GUI based on the message information set,and the display control section 13 may control the display system 10D(see, e.g., FIG. 16) so that a display based on the display informationis presented (step 142). Specifically, the display-informationgenerating section 12 may generate a message portion in the GUI on thebasis of message data included in the message information. Furthermore,the display-information generating section 12 may generate a linkportion in the GUI on the basis of message properties and linkproperties included in the message information. The display controlsection 13 may control the display system 10D so that a GUI including amessage set and a link between the messages is displayed.

When the user performs an operation of selecting a message, theoperation receiving section 14 may receive the operation (step 143).Then, the display-information generating section 12 may extract a seriesof messages from the message information received at step 141 byfollowing a link (step 144). Specifically, the display-informationgenerating section 12 may extract messages and a link that have messageproperties and link properties, respectively, that have the same taginformation as the message properties of the message selected at step143. Then, the display-information generating section 12 may generatedisplay information for displaying only the series of extracted messagesand hiding the other messages, and the display control section 13 maycontrol the display system 10D (see, e.g., FIG. 16) so that a displaybased on the display information is presented (step 145).

Although, in this operation example, the process of extracting a seriesof messages by following a link is performed at the client 10, theprocess may be performed, in some embodiments, at the IM server 20. Forexample, in some embodiments, the client 10 and the IM server 20 mayperform the following operation. At the client 10, the operationreceiving section 14 may receive the user operation of selecting amessage, and the transmitting section 15 may transmit information to theIM server 20 indicating that the operation of selecting a message hasbeen performed. Thus, at the IM server 20, the receiving section 22 mayreceive the information indicating that the operation of selecting amessage has been performed from the client 10, and themessage-information managing section 23 may extract a series of messagesfrom the message information stored in the message-information storagesection 21 by following a link, and the transmitting section 24 maytransmit the series of extracted messages to the client 10. Thus, at theclient 10, the receiving section 11 may receive the series of extractedmessages from the IM server 20, the display-information generatingsection 12 may generate display information for displaying the series ofextracted messages and hiding the other messages, and the displaycontrol section 13 may controls the display system 10D (see, e.g., FIG.16) so that a display based on the display information is presented.

FIG. 15 is a sequence diagram showing an operation example of the client10 and the IM server 20 when implementing the outline shown in FIGS. 6and 7, in accordance with some embodiments of the present invention.This operation is started, for example, when the user sends a request tostart instant messaging from the client 10 to the IM server 20. Here, anend of a link connecting to a keyword may be referred to as a “startingend”, and an end of the link connecting to a message may be referred toas a “terminal end”.

As shown in FIG. 15, at the IM server 20, the message-informationmanaging section 23 may read a message information set from themessage-information storage section 21, and the transmitting section 24may transmit the message information set to the client 10 (step 261).

Thus, at the client 10, the receiving section 11 may receive the messageinformation set from the IM server 20 (step 161). Thedisplay-information generating section 12 may generate displayinformation for displaying a GUI based on the message information set,and the display control section 13 may control the display system 10 d(see, e.g., FIG. 16) so that a display based on the display informationis presented (step 162). Specifically, the display-informationgenerating section 12 may generate a message portion in the GUI on thebasis of message data included in the message information. Furthermore,the display-information generating section 12 may generate a linkportion in the GUI on the basis of message properties and linkproperties included in the message information. The display controlsection 13 may control the display system 10D so that a GUI including amessage set and a link between the messages is displayed.

When the user performs an operation of selecting a link betweenmessages, the operation receiving section 14 may receive the operation(step 163). At that time, the operation receiving section 14 may holdexisting-starting-end-and-terminal-end information including a keywordat the starting end of the selected link and a message at the terminalend. Thereafter, the display-information generating section 12 maygenerate display information for displaying an icon that can be draggedto the starting end and the terminal end of the link, and the displaycontrol section 13 may control the display system 10D (see, e.g., FIG.16) so that a display based on the display information is presented(step 164).

When the user performs an operation of dragging and dropping the icon toa displayed message in response to that presentation, the operationreceiving section 14 may receive the operation (step 165). When an iconat the starting end of the link is dragged and dropped, the operationreceiving section 14 may hold new-starting-end-and-terminal-endinformation including a keyword at the dragged and dropped portion as akeyword at the starting end of the link, and the same message as thatbefore the drag & drop as a message at the terminal end of the link.When an icon at the terminal end of the link is dragged and dropped, theoperation receiving section 14 may holdnew-starting-end-and-terminal-end information including the same messageas that before the drag & drop as a message at the starting end of thelink, and a keyword at the dragged and dropped portion as a keyword atthe terminal end of the link. Thereafter, the display-informationgenerating section 12 may generate display information for displaying adialog box for asking whether to move the link or add a link, and thedisplay control section 13 may control the display system 10D (see,e.g., FIG. 16) so that a display based on the display information ispresented (step 166).

When the user performs an operation of selecting whether to move thelink or add a link in response to that presentation, the operationreceiving section 14 may receive the operation (step 167). Then, thetransmitting section 15 may transmit theexisting-starting-end-and-terminal-end information and thenew-starting-end-and-terminal-end information that the operationreceiving section 14 held before and the movement/additionclassification for distinguishing whether to move the link or add a linkthat the operation receiving section 14 received to the IM server 20(step 168).

Thus, at the IM server 20, the receiving section 22 may receive theexisting-starting-end-and-terminal-end information, thenew-starting-end-and-terminal-end information, and the movement/additionclassification (step 262). Then, the message-information managingsection 23 may replace the link between target messages or adds a newlink there between (step 263). Specifically, the message-informationmanaging section 23 may create link properties of the link indicated bythe new-starting-end-and-terminal-end information, may set a message atthe terminal end included in the new-starting-end-and-terminal-endinformation to the link properties as a link destination message, andmay set a keyword at the starting end included in thenew-starting-end-and-terminal-end information as a link source keywordand as tag information, and may store them in the message-informationstorage section 21. Furthermore, the message-information managingsection 23 may set the set link to the message properties of the messageat the starting end. Furthermore, the message-information managingsection 23 may set tag information set to the message properties of themessage at the starting end to the message properties of the message atthe terminal end. If the movement/addition classification indicatesaddition, the process may be terminated, but if the movement/additionclassification indicates movement, the existing link may be deleted. Inother words, the message-information managing section 23 may delete thelink properties of the link indicated by theexisting-starting-end-and-terminal-end information. Themessage-information managing section 23 may delete the deleted link fromthe message properties of the message at the starting end. Furthermore,the message-information managing section 23 may delete tag informationset to the message properties of the message at the starting end fromthe message properties of the message at the terminal end.

Thereafter, the transmitting section 24 may notify all the other clients10 related to this session that the message information has been updated(step 264).

In this operation example, in some embodiments, there may be at leasttwo methods for reflecting replacement or addition of a link to a GUIdisplayed on the client 10.

A first method may involve receiving updated message information fromthe IM server 20 after step 264, and reflecting the replacement oraddition of a link to the GUI displayed on the client 10 on the basis ofthe updated message information.

A second method may involve reflecting the replacement or addition of alink to a GUI displayed on the client 10 on the basis of theexisting-starting-end-and-terminal-end information, thenew-starting-end-and-terminal-end information, and the movement/additionclassification transmitted at step 168 in parallel with updating messageinformation at the IM server 20.

In other words, some embodiments are configured on the assumption thatthe IM server 20 manages message information collectively and updatesthem; however, the present invention is not limited thereto. Forexample, in some embodiments, the client 10 may receive messageinformation from the IM server 20, and the client 10 may update it, asshown as variations of the individual operation examples. In suchembodiments, the receiving section 11 may function as an example of anacquisition unit that obtains a message; the display-informationgenerating section 12 may function as an example of a generating unitthat generates link information, and the display control section 13 mayfunction as an example of a control unit that performs control so that amessage or the like is displayed or hidden.

Some embodiments are configured to link a reply target keyword and areply message and display them graphically, as described above. This mayallow the context of messages in instant messaging to be clearly shown.

Furthermore, some embodiments may have the function of displaying orhiding messages thread by thread. This may allow only a thread that theuser is interested in to be displayed.

Furthermore, some embodiments may have the function of changing thedestination of a link between messages. This may allow a thread ofmessages to be created afterwards to show the context of a series ofmessages.

FIG. 16 is a diagram of an example of the hardware configuration of theclient 10, in accordance with some embodiments of the present invention.As shown in FIG. 16, the client 10 may include a central processing unit(CPU) 10A serving as an operation unit, a main memory 10C connected tothe CPU 10A via a mother board (M/B) chipset 10B, and a display system10D connected to the CPU 10A via the M/B chipset 10B as well. The M/Bchipset 10B may connect to a network interface 10F, a magnetic diskdrive (HDD) 10G, an audio system 10H, a keyboard/mouse 10I, and anoptical drive 10J via a bridge circuit 10E.

In FIG. 16, the components may be connected through buses. For example,the CPU 10A and the M/B chipset 10B, and the M/B chipset 10B and themain memory 10C may be connected through a CPU bus. The M/B chipset 10Band the display system 10D may be connected through an acceleratedgraphics port (AGP); also, in the case where the display system 10Dincludes a PCI Express video card, the M/B chipset 10B and the videocard may be connected through a PCI Express (PCIe) bus. In connecting tothe bridge circuit 10E, the network interface 1OF may be a PCIe bus, forexample. Examples of the magnetic disk drive 10G may include a serial ATAttachment (ATA), a parallel transfer ATA, and Peripheral ComponentsInterconnect (PCI). For the keyboard/mouse 101 and the optical drive10J, a universal serial bus (USB) may be used.

Although FIG. 16 shows an example of the hardware configuration of theclient 10, it may, in some embodiments, be regarded as an example of thehardware configuration of the IM server 20.

The present invention may be achieved entirely by hardware or softwareor by both of hardware and software. The present invention can beimplemented as, without limitation, a computer, a data processingsystem, and a computer program. The computer program can be provided viaa computer-readable medium. Conceivable examples of the medium includeelectronic, magnetic, optical, electromagnetic, infrared, andsemiconductor systems (apparatuses or units) and a transmission medium.Examples of the computer-readable medium may include a semiconductorsolid-state storage unit, a magnetic tape, a removable computerdiskette, a random access memory (RAM), a read-only memory (ROM), arigid magnetic disk, and an optical disk. Examples of the optical diskat the present time may include a compact disk read-only memory(CD-ROM), a compact disk read/write (CD-R/W), and a DVD.

While the present invention has been described in its preferredembodiments, it is to be understood that the technical scope of thepresent invention is not limited to the embodiments. It is apparent tothose skilled in the art that various changes and modifications can bemade without departing from the spirit and scope of the presentinvention.

What is claimed is:
 1. A method for processing messages input from aplurality of clients, comprising: obtaining a first message input from afirst client; obtaining a second message input from a second client,wherein the second message is a comment on a first portion of the firstmessage; obtaining, in response to a user of the second client selectingthe portion of the first message, an association of the second messagewith a portion of the first message; displaying, to the plurality ofclients and in response to the second message being input, at least onecopy of the first message, and at least one copy of the second message;creating, in response to obtaining the association of the second messagewith the portion of the first message, a link-destination-message valueand a link-source-keyword value, wherein the link-destination-messagevalue indicates that the second message is a link destination and thelink-source-keyword value indicates that the first portion of the firstmessage is a link target; storing the link-destination-message value andlink-source-keyword value in a message-information storage section; anddisplaying, to the plurality of clients and based on thelink-destination-message value and link-source-keyword value, a firstlink that connects the at least one copy of the second message to thefirst portion of the at least one copy of the first message, wherein thelink comprises: a first link end, the location of which is determined bya location of the link target; a second link end, the location of whichis determined by a location of the link destination; and a lineconnecting the first link end to the second link end; wherein the firstmessage and the second message are instant messages.
 2. The methodaccording to claim 1, further comprising: obtaining a third messageinput from a third client; obtaining a first user selection input fromthe third client, the first user selection being of a second portion ofthe first message and indicating that the third message is a comment onthe second portion of the first message; and performing, in response tothe obtaining the first message, the second message, the third message,and the first user selection, a second control action resulting in thefirst message, the second message, the third message, the first link,and a second link connecting the second portion of the first message andthe third message being displayed on the plurality of clients.
 3. Themethod according to claim 2, further comprising: obtaining a second userselection input from a fourth client, the second user selection being ofthe first portion of the first message and indicating that only thefirst portion of the first message and those messages that areresponsive thereto should be displayed on the fourth client; andperforming, in response to the obtaining the first message, the secondmessage, the third message, the first user selection, and the seconduser selection, a third control action resulting in the first message,the second message, and the first link being displayed on the fourthclient and further resulting in the third message and the second linknot being displayed on the fourth client.
 4. The method according toclaim 3, further comprising: obtaining a fourth message input from thesecond client; and obtaining a third user selection input from thesecond client, the third user selection being of a whole of the firstmessage and indicating that the fourth message is a comment on the wholeof the first message, wherein, in response to the obtaining the fourthmessage and the fourth comment, the third control action further resultsin the fourth message and a fourth link being displayed on the fourthclient, the fourth link connecting the whole of the first message andthe fourth message.
 5. The method according to claim 2, furthercomprising: performing, in response to the obtaining the first message,the second message, the third message, and the first user selection, afirst notification action resulting in the second client outputting anotice indicating that the third message has been input.
 6. The methodaccording to claim 1, wherein the second message being input from thesecond client is in response to, on a display of the second client, afirst end of a first line being moved by a user to the first portion ofthe first comment and a second end of the first line being moved by theuser to the second message.
 7. The method according to claim 1, whereinan instant messenger server in communication with the plurality ofclients performs the obtaining the first message, the second message,and the user selection, and further performs the performing the firstcontrol action.
 8. A computer program product for processing messagesinput from a plurality of clients, the computer program productcomprising a computer readable storage medium having programinstructions embodied therewith, the program instructions executable bya computer to cause the computer to: obtain a first message input from afirst client; obtain a second message input from a second client,wherein the second message is a comment on a first portion of the firstmessage; obtain, in response to a user of the second client selectingthe portion of the first message, an association of the second messagewith a portion of the first message; display, to the plurality ofclients and in response to the second message being input, at least onecopy of the first message, and at least one copy of the second message;create, in response to obtaining the association of the second messagewith the portion of the first message, a link-destination-message valueand a link-source-keyword value, wherein the link-destination-messagevalue indicates that the second message is a link destination and thelink-source-keyword value indicates that the first portion of the firstmessage is a link target; store the link-destination-message value andlink-source-keyword value in a message-information storage section; anddisplay, to the plurality of clients and based on thelink-destination-message value and link-source-keyword value, a firstlink that connects the at least one copy of the second message to thefirst portion of the at least one copy of the first message, wherein thelink comprises: a first link end, the location of which is determined bya location of the link target; a second link end, the location of whichis determined by a location of the link destination; and a lineconnecting the first link end to the second link end; wherein the firstmessage and the second message are instant messages.
 9. The computerprogram product according to claim 8, further comprising: obtaining athird message input from a third client; obtaining a first userselection input from the third client, the first user selection being ofa second portion of the first message and indicating that the thirdmessage is a comment on the second portion of the first message; andperforming, in response to the obtaining the first message, the secondmessage, the third message, and the first user selection, a secondcontrol action resulting in the first message, the second message, thethird message, the first link, and a second link connecting the secondportion of the first message and the third message being displayed onthe plurality of clients.
 10. The computer program product according toclaim 9, further comprising: obtaining a second user selection inputfrom a fourth client, the second user selection being of the firstportion of the first message and indicating that only the first portionof the first message and those messages that are responsive theretoshould be displayed on the fourth client; and performing, in response tothe obtaining the first message, the second message, the third message,the first user selection, and the second user selection, a third controlaction resulting in the first message, the second message, and the firstlink being displayed on the fourth client and further resulting in thethird message and the second link not being displayed on the fourthclient.
 11. The computer program product according to claim 10, furthercomprising: obtaining a fourth message input from the second client; andobtaining a third user selection input from the second client, the thirduser selection being of a whole of the first message and indicating thatthe fourth message is a comment on the whole of the first message,wherein, in response to the obtaining the fourth message and the fourthcomment, the third control action further results in the fourth messageand a fourth link being displayed on the fourth client, the fourth linkconnecting the whole of the first message and the fourth message. 12.The computer program product according to claim 9, further comprising:performing, in response to the obtaining the first message, the secondmessage, the third message, and the first user selection, a firstnotification action resulting in the second client outputting a noticeindicating that the third message has been input.
 13. The computerprogram product according to claim 8, wherein the second message beinginput from the second client is in response to, on a display of thesecond client, a first end of a first line being moved by a user to thefirst portion of the first comment and a second end of the first linebeing moved by the user to the second message.
 14. The computer programproduct according to claim 8, wherein an instant messenger server incommunication with the plurality of clients performs the obtaining thefirst message, the second message, and the user selection, and furtherperforms the performing the first control action.
 15. The computerprogram product according to claim 8, wherein the first portioncomprises a first word in the first message and wherein at a least asecond word in the first message is not included in the first portion.16. The computer program product according to claim 8, wherein the firstmessage comprises a second portion that is not the same as the firstportion.
 17. The computer program product according to claim 8, whereinthe second message comprises contextual-relationship information that isnot graphically displayed in the second message, wherein thecontextual-relationship information specifies that the second message isa comment on a first portion of the first message, and wherein the firstlink graphically displays the contextual-relationship information bymeans of the connection from the at least one copy of the second messageto the first portion of the at least one copy of the first message. 18.The computer program product according to claim 8, wherein the firstmessage and second message are input in an instant messaging chat room,and wherein the link specifies to the plurality of clients that thesecond message is a reply to the first message rather than to the entirechat room.
 19. The computer program product according to claim 8,wherein the portion of the first message is a keyword in the firstmessage.